Activating Compound | Comment | Organism | Structure |
---|---|---|---|
additional information | no activating substance | Oryctolagus cuniculus |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
glycylglycine | slight inhibition | Oryctolagus cuniculus | |
p-hydroxymercuribenzoate | 0.3 mM: completely | Oryctolagus cuniculus | |
Tris | 0.02 M Tris: 50-60% inhibition | Oryctolagus cuniculus | |
Urea | glucosidase-transferase: 31% inhibition at 0.21 M, 72% at 1.6 M, 98% at 3.2 M | Oryctolagus cuniculus |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | - |
Oryctolagus cuniculus | |
0.74 | - |
glycogen phosphorylase limit dextrin | - |
Oryctolagus cuniculus | |
1.8 | - |
63-alpha-glucosyl maltotetraose | branched pentasaccharide B5, pH 6.6 | Oryctolagus cuniculus | |
5.6 | - |
63-alpha-maltotriosyl maltotetraose | branched heptasaccharide B7, muscle enzyme | Oryctolagus cuniculus |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
267000 | 279000 | glycogen debranching enzyme, equilibrium ultracentrifugation | Oryctolagus cuniculus |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Oryctolagus cuniculus | - |
- |
- |
Purification (Comment) | Organism |
---|---|
- |
Oryctolagus cuniculus |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
muscle | - |
Oryctolagus cuniculus | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
- |
Oryctolagus cuniculus |
0.82 | - |
substrate: 63-alpha-glucosyl maltotetraose | Oryctolagus cuniculus |
3.9 | - |
substrate: limit dextrin | Oryctolagus cuniculus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
63-alpha-glucosyl maltotetraose + H2O | branched pentasaccharide "fast B5" | Oryctolagus cuniculus | maltotetraose + D-glucose | - |
r | |
63-alpha-maltotriosyl maltotetraose + H2O | branched heptasaccharide B7 | Oryctolagus cuniculus | ? | - |
? | |
beta-amylase limit dextrin + H2O | - |
Oryctolagus cuniculus | limit dextrin + D-glucose | - |
r | |
glycogen phosphorylase limit dextrin + H2O | - |
Oryctolagus cuniculus | ? | - |
? | |
glycogen phosphorylase-limit dextrin + H2O | - |
Oryctolagus cuniculus | limit dextrin + D-glucose | partially debranched glycogen | r | |
additional information | - |
Oryctolagus cuniculus | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
glycogen debranching system | EC 3.2.1.33 found in mammals and yeast is in a single polypeptide chain containing two active centres. The other activity is similar to that of EC 2.4.1.25, 4-alpha-glucanotransferase, which acts on the glycogen phosphorylase limit dextrin chains to expose the single glucose residues, which the 6-alpha-glucosidase activity can hydrolyse. Together, these two activities constitute the glycogen debranching system | Oryctolagus cuniculus |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
- |
Oryctolagus cuniculus |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
6.1 | 6.4 | sodium citrate/mercaptoethanol buffer | Oryctolagus cuniculus |